This probably seems like a question I could find the answer to, but I couldn't find anything exact and I wanted to be 100% sure.

Here's the situation:

I had never tried street photography (and wasn't going to), but I was given an assignment for school last week, so I went out and took some portraits of people I met in the street.

I asked and got permission from all of them before I took their pictures.

Now I'm wondering what I can actually do with them; I don't intend to sell any of them, but I thought of maybe uploading them to Flickr, 500px or instagram or something like that.

Am I allowed to do that?